a spanking

"It says 'Please Spank me!" said one of the boys, a strapping tanned, blonde of about 18 years of age.

Crystal gasped, but then a strange sensation came over her, and before she knew what was happening, she blurted out "Oh yes, PLEASE spank me! Slap my ass!" She got on her hands and knees, arched her back, and presented her ass to the boys. "PLEASE spank me!" she said without being able to shut herself up.

"Crystal!" said Roxanne, "are you nuts?"

"Spank me!" was all Crystal could say. She blushed and was scared and wanted to get up and run away but could not. Suddenly her mouth opened again. "I NEED a spanking!"

"Well, OK," said the blonde boy. He got on his knees behind Crystal.

"Smack!"

"Oh yeah, harder!" said Crystal to he continued disbelief.

"Smack!"

"Oh, yeah, smack my ass! Slap my ass harder!"

"Smack!"

As the boy slapped away, Crystal begged for more as her pussy grew wet. Finally she orgasmed and cried out, "Yes! Yes! YESSSSSS!"

She regained control of herself. Roxanne was staring in stunned amazement. A crowd had formed. Crystal got up and ran off towards the shower stalls and changing rooms at the edge of the beach. She ran inside and entered a stall. She was very horny, her ass was on fire, and her pussy was very wet.